Cover Picture: Acid‐Responsive Absorption and Emission of 5‐N‐Arylaminothiazoles: Emission of White Light from a Single Fluorescent Dye and a Lewis Acid (ChemistryOpen 5/2016)

The Front Cover picture shows structures of the key compounds and the change in the fluorescence. Although electron-donating and -accepting groups of monocyclic 5-N,N-diarylaminothiazoles are not in the same plane but highly deviated, they show relatively strong fluorescence from blue to orange. In particular, the addition of Brønsted and Lewis acids to 5-N,N-diaryl-2-(4-pyridyl)thiazoles shifts the absorption and emission to longer wavelengths. The thiazoles and acids form 1:1 complexes. Fine tuning of the amount of added B(C6F5)3 enables us to provide a white-light emission with a single fluorescent molecule. More information can be found in the Communication by T. Murai and co-workers on page 434 in Issue 5, 2016 (DOI: 10.1002/open.201600059).